Studies On Ecological Benefits Evaluation In Jiufeng National Forest Park

Ecological benefit is the best embodiment of Forest park's service valuation. A scientific analysis and evaluation of forest park's ecological benefits can be the crucial guidance for the construction, development of tour activities and exploiture of tourist scenery in forest parks. But most former studies' definition and veracity were not accurately obtained because the research methods in this field were limited in the estimating evaluation based on experience. Jiufeng National Forest Park is by far the nearest national forest park to downtown, the result of its ecological benefits evaluation can provide some good advice to the construction and development of some other resorts in Beijing.Taking Jiufeng National Forest Park as the target, the research inspected related ecological environment index variation as well as calculated the ecological benefits of the forest park. Then quantity was used to demonstrate the ecological benefits in forest park and correlative ecological environment effect that could be used in the tourism exploiture.The article calculated the carbon-fixed and oxygen-made ability of Jiufeng national park every year, benefit of temperature decreased and humidity increased in different seasons, benefit of dust reduced by plants, benefit of noise reduced and benefit of environmental aero-anion. Most part of these was based on the dynamic studies of vegetable quantity in Jiufeng National Forest Park.From the research the conclusion is drawn that 8000 tons CO₂ is absorbed by the plants and 5800 tons O₂ is released in Jiufeng National Forest Park every year. Air condition of Jiufeng national park is outstanding. Concentration of CO)2 is 343 ppm in summer and 332.5 ppm in autumn, both are lower than in urban area which is 463.4ppm and 450.2ppm separately. Concentration of aero-anion in Jiufeng National Forest Park is 1568 /cm³ in summer and 995/cm³ in autumn, is obviously higher than urban area and is benefit to human health.Average temperature of summer in Jiufeng national forest park is 2.9℃ lower than that in the urban area. And average humidity is 8% higher comparatively, which is mainly aroused by plants transpiration that changed the temperature and humidity environment of related small area. The index of temperature and humidity of Jiufeng national forest park insummer is obvious higher than the urban area, which provide a comfortable environment to tourists.248 tons dust had been reduced by the plants in Jiufeng national forest park every year approximately. Average absorbable dust concentration is 0.0617mg/m3 lower than in the urban area which is 0.1126mg/m3.Average noise levels of Jiufeng national forest park are 49.57db and 47.84db in different seasons, which is 23% and 25% lower than in urban area which is 64.72db, and 63.48db separately. Average noise level in forest park attains national first class standard.In conclusion, the ecological benefits of Jiufeng national park is very prominent, environmental quality is much better than in urban area, cooler temperature and humidity environment in summer provide a ideal resort for summer. The forest environment in Jiufeng National Forest Park has a recuperation and health virtue and is the base recourse for the development of tourism activities as well.